the force too much for the city's power grid. floodwaters shorting out this con ed substation. 750,000 new yorkers lost electricity. >> trying to get information. no one has power. no one has internet. >> reporter: adding to the misery, daylight revealed. >> it's amazing. i mean, cars are completely destroyed. they were submerged under water. i mean, i'm floored by what happened. >> reporter: no borough was spared, from this oil tanker beaching on staten island to a beach community in queens. >> this is a massive storage unit from a construction site. it floated over here or was blown over here, get this, all the way from across the street. you see those other containers that are there right now. >> reporter: the mayor said this may be the worst storm in the city's history. >> the damage we suffered across the city was clearly extensive, and it will not be repaired overnight. >> reporter: the subway system that carries 5 million people is flooded and could take four days to repair. water damage to laguardia's runways will keep it